Researchers from the University of Warsaw and the University of Wrocław have developed a method for constructing flexible molecular knots and links. Flexibility enables the formation of entangled regions in protein or nucleic acid molecules.
‘There are successes in a scientist's work, but there are dozens of failures along the way. As much as 70-80 percent of our work ends in failure. However, a successful experiment is the greatest motivation for further work,’ says Dr. Aleksandra Rutkowska, who studies the nervous system, especially the degeneration processes taking place in the brain.
Physical activity in winter supports the body's physiological defence mechanism against cold. It causes increased metabolism and stimulates the circulatory system, say scientists who have examined the impact of winter activity on somatic parameters, body composition and motor skills of men.